from pythonds.basic import Stack


def test():
    s = Stack()
    print(s.empty())
    s.push(4)
    s.push("dog")
    print(s.top())
    s.push(True)
    print(s.size())
    print(s.empty())
    s.push(6.6)
    print(s.top())
    print(s.pop())
    print(s.pop())
    print(s.size())
